The dryness and cracking of the corners of the eyes may be caused by dry syndrome, dry eye, blepharitis, etc.. 1. Dry syndrome: due to autoimmune exocrine gland epitheliitis, resulting in damage to the lacrimal gland, the function of the secretion of tears decreases dry eyes, resulting in dehydration of the mucous membrane at the corners of the eyes, cracking. 2. Dry eye syndrome: due to infection, abnormal hormone levels and other reasons lead to blockage or abnormal function of the lacrimal gland, tears and can not moisturize the corners of the eyes in a timely manner, resulting in dry cracks. 3. Blepharitis: mostly caused by bacterial infection, resulting in inflammation of the surface of the eyelid margin, eyelash follicles and their glandular tissues, and when the disease is more severe, the corners of the eyes may ulcerate, resulting in dry and cracked corners of the eyes. When dry cracked corners of the eyes, it is recommended to consult a doctor in a timely manner, follow the doctor’s instructions for further examination, to clarify the cause, and to carry out targeted treatment.